I$\text{'}$m writing a call function in a C$++$ program and most of it is done. Its function is to complete the movement of the position of the letters in a $2$D map matrix.

I$\text{'}$d like to add a feature that will detect if other letters are in the way of moving letters in different directions. How can this be done?

For example, if the letter A moves three squares to the east, then the contents of the three adjacent squares on the east side of A must all be $"."$ instead of other letters, otherwise return instructions that failed to move.

StatusMoveAction updateMapForMoveAction$($char map$[$MAX$\_$ROWS$][$MAX$\_$COLS$],$ int mapRows, int mapCols,

$$ char letter, DirectionType direction, int moveSteps$)$

$\{$

$//$ Step $1$: Locate the position of the letter

$$ int currentRow $=-1,$ currentCol $=-1$;

$$

$$ for $($int row $=0$; row $<$ mapRows; row$++)\{$

$$ for $($int col $=0$; col $<$ mapCols; col$++)\{$

$$ if $($map$[$row$][$col$]==$ letter$)\{$

$$ currentRow $=$ row;

$$ currentCol $=$ col;

$$ break;

$\}$

$\}$

$$ if $($currentRow $!=-1)$ break; $//$ Exit outer loop when letter is found

$\}$

$$

$//$ If the letter is not found, return invalid move

$$ if $($currentRow $==-1||$ currentCol $==-1)\{$

$$ return STATUS$\_$ACTION$\_$MOVE$\_$NOT$\_$IMPLMENTED;

$\}$

$//$ Step $2$: Calculate new position based on direction and steps

$$ int newRow $=$ currentRow, newCol $=$ currentCol;

$$

$$ switch $($direction$)\{$

$$ case DIRECTION$\_$NORTH:

$$ newRow $=$ newRow $-$ moveSteps;

$$ break;

$$ case DIRECTION$\_$SOUTH:

$$ newRow $=$ newRow $+$ moveSteps;

$$ break;

$$ case DIRECTION$\_$WEST:

$$ newCol $=$ newCol $-$ moveSteps;

$$ break;

$$ case DIRECTION$\_$EAST:

$$ newCol $=$ newCol $+$ moveSteps;

$$ break;

$\}$

$//$ Step $3$: Validate the new position

$//$ Check if the new position is within the map boundaries

$$ if $($newRow $<0||$ newRow $>=$ mapRows $||$ newCol $<0||$ newCol $>=$ mapCols$)\{$

$$ return STATUS$\_$ACTION$\_$MOVE$\_$OUTSIDE$\_$BOUNDARY;

$\}$

$//$ Check if the new position is not occupied by another letter

$$ if $($map$[$newRow$][$newCol$]!=\text{'}.\text{'})\{$

$$ return STATUS$\_$ACTION$\_$MOVE$\_$HIT$\_$ANOTHER$\_$ALONG$\_$PATH;

$\}$

$//$ Step $4$: Update the map

$$ map$[$currentRow$][$currentCol$]=\text{'}.\text{'}$; $//$ Clear the old position

$$ map$[$newRow$][$newCol$]=$ letter; $//$ Move letter to the new position

$//$ Step $5$: Return success status

$$ return STATUS$\_$ACTION$\_$MOVE$\_$SUCCESS;

$\}$